Which heart condition is the most dangerous?
a. Tachycardia
b. Atherosclerosis
c. Bradycardia
d. Atrial fibrillation
e. Ventricular fibrillation
e
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During generalized transduction
A. the host chromosome is degraded into randomly sized fragments. B. any bacterial gene may be transferred to the subsequent host. C. any DNA fragment of the appropriate size is packaged. D. All of the choices are correct.
Four of the five answers listed below are sources of air pollution. Select the exception
a. carbon dioxide b. oxides of nitrogen c. oxides of sulfur d. chlorofluorocarbons e. water vapor
When MSH2 and MLH1 are inactivated by mutation, DNA repair is defective and ____________________ mutation
rates increase by at least 100-fold. Fill in the blank(s) with the appropriate word(s).
Consider a U-tube that initially contains pure water on one side of a selectively permeable membrane
and water plus solute on the other side. Which of the following best describes what will happen next? a. Solute molecules diffuse across the membrane faster than water molecules. b. The fluid level rises on the side containing the pure water. c. The diffusion of water molecules causes an osmotic pressure to build up in the tube. d. Solute molecules are transported across the membrane by facilitated diffusion. e. Some water molecules become "bound up" with solute molecules and do not diffuse freely.